[PATCH 05/26] omap3isp: Make isp_video_buffer_prepare_user() use get_user_pages_fast()

[Jan Kara <jack@xxxxxxx>]

CC: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
CC: linux-media@xxxxxxxxxxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
 drivers/media/platform/omap3isp/ispqueue.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index e15f01342058..bed380395e6c 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -331,13 +331,9 @@ static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf)
 	if (buf->pages == NULL)
 		return -ENOMEM;
 
-	down_read(&current->mm->mmap_sem);
-	ret = get_user_pages(current, current->mm, data & PAGE_MASK,
-			     buf->npages,
-			     buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
-			     buf->pages, NULL);
-	up_read(&current->mm->mmap_sem);
-
+	ret = get_user_pages_fast(data & PAGE_MASK, buf->npages,
+				  buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE,
+				  buf->pages);
 	if (ret != buf->npages) {
 		buf->npages = ret < 0 ? 0 : ret;
 		isp_video_buffer_cleanup(buf);
-- 
1.8.1.4

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>